CONTROL OF SWITCHER REGULATED POWER AMPLIFIER MODULES
First Claim
1. A control system for a transmitter of a wireless device, the transmitter having a pre-amplifier and a power amplifier coupled to an output of the pre-amplifier, the control system comprising:
- a signal input for receiving a detection signal representative of a pre-amplified transmission signal sensed at the output of the pre-amplifier by a detector;
a switching regulator control block configured to generate a switching supply control signal based on the received detection signal, the switching supply control signal comprising control values for a switched mode power supply configured to generate a supply voltage signal for the power amplifier in response to the switching supply control signal, the control values being generated to hold the power amplifier in a state of constant compression so that the effects of the compression of the power amplifier are a constant function of transmission power; and
a signal output for providing the switching supply control signal to the switched mode power supply;
wherein, in operation, the switching regulator control block communicates with the detector using the signal input and with the switched mode power supply using the signal output.
4 Assignments
0 Petitions
Accused Products
Abstract
Various embodiments described herein relate to a power management block and an amplification block used in the transmitter of a communication subsystem. The power management block provides improved control for the gain control signal provided to a pre-amplifier and the supply voltage provided to a power amplifier which are both in the amplification block. The power expended by the power amplifier is optimized by employing a continuous control method in which one or more feedback loops are employed to take into account various characteristics of the transmitter components and control values.
-
Citations
21 Claims
-
1. A control system for a transmitter of a wireless device, the transmitter having a pre-amplifier and a power amplifier coupled to an output of the pre-amplifier, the control system comprising:
-
a signal input for receiving a detection signal representative of a pre-amplified transmission signal sensed at the output of the pre-amplifier by a detector; a switching regulator control block configured to generate a switching supply control signal based on the received detection signal, the switching supply control signal comprising control values for a switched mode power supply configured to generate a supply voltage signal for the power amplifier in response to the switching supply control signal, the control values being generated to hold the power amplifier in a state of constant compression so that the effects of the compression of the power amplifier are a constant function of transmission power; and a signal output for providing the switching supply control signal to the switched mode power supply; wherein, in operation, the switching regulator control block communicates with the detector using the signal input and with the switched mode power supply using the signal output. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method of controlling a transmitter of a wireless device, the transmitter having a pre-amplifier and a power amplifier coupled to an output of the pre-amplifier, the method comprising:
-
receiving a detection signal representative of a pre-amplified transmission signal sensed at the output of the pre-amplifier by a detector; generating a switching supply control signal based on the received detection signal, the switching supply control signal comprising control values for a switched mode power supply configured to generate a supply voltage signal for the power amplifier in response to the switching supply control signal, the control values being generated to hold the power amplifier in a state of constant compression so that the effects of the compression of the power amplifier are a constant function of transmission power; and providing the switching supply control signal to the switched mode power supply. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A non-transitory computer-readable storage medium storing instructions executable by a processor coupled to the storage medium, the instructions, when executed by the processor, cause the processor to perform acts of a method of controlling a transmitter of a wireless device, the transmitter having a pre-amplifier and a power amplifier coupled to an output of the pre-amplifier, said acts comprising:
-
receiving a detection signal representative of a pre-amplified transmission signal sensed at the output of the pre-amplifier by a detector; generating a switching supply control signal based on the received detection signal, the switching supply control signal comprising control values for a switched mode power supply configured to generate a supply voltage signal for the power amplifier in response to the switching supply control signal, the control values being generated to hold the power amplifier in a state of constant compression so that the effects of the compression of the power amplifier are a constant function of transmission power; and providing the switching supply control signal to the switched mode power supply. - View Dependent Claims (16, 17, 18, 19, 20, 21)
-
Specification